Seminars and colloquia

E.g., Apr 24, 2025

Alexander Weekes

University of Saskatchewan
Symplectic leaves and representation theory

May 6, 2025 - 11:30 am to 12:30 pm

MATH 104

Given a complex algebraic variety with a Poisson structure, one can ask for its decomposition into symplectic leaves: the foliation by flows of Hamiltonian vector fields. Although a priori not guaranteed, in many situations these strata are themselves algebraic varieties, and ... Read more
  • Algebra and Algebraic geometry
  • Topology

Emad Chaparian

University of Strathclyde Glasgow
Elastic boost: an ideal non-linear rheology for particle manipulation and sorting

May 6, 2025 - 3:00 pm to 4:00 pm

MATH 203

Particle sorting and manipulation have applications in a wide range of fields, from pharmaceutical sciences to biomedical and material engineering. It has been shown that the non-linearity in the background fluid flow, either coming from the fluid inertia or from the non- ... Read more
  • Fluids

Tobias Lamm


New estimates for harmonic maps

May 6, 2025 - 3:00 pm to 4:00 pm

MATH 202

TBA Read more
  • Differential geometry

Shawn Desaulniers

University of Alberta
The Good, The Bad, and The Ugly: Empowering Communities to Cultivate Mathematical Minds

May 6, 2025 - 3:00 pm to 4:00 pm

MATH 104

This presentation explores the current state of mathematics education, highlighting the transformative potential of math circles and collaborative teaching alongside the challenges posed by systemic barriers and restrictive policies. We argue that true mathematical empowerment ... Read more
  • Mathematics education

Jonathan Wise

University of Colorado Boulder
The logarithmic Grassmannian

May 6, 2025 - 3:00 pm to 4:00 pm

MATH 225

I will describe an approach to constructing a compact moduli space of hyperplane arrangements use logarithmic and tropical geometry. Read more
  • Algebra and Algebraic geometry
  • Topology

Matilde Lalin

Universite de Montreal
Nonvanishing of L-functions of fixed order characters over function fields

May 6, 2025 - 3:00 pm to 4:00 pm

MATH 204

  • Number Theory

Sheng-Hao Yang


Local Regularity in the Navier-Stokes Equations

May 6, 2025 - 3:00 pm to 4:00 pm

MATH 105

In this short talk, I will review several results on the local-in-space, short-time regularity of the Navier-Stokes equations with critical initial data. An application is the concentration behavior near potential blow-up points. Sheng Hao Yang is currently pursuing a PhD ... Read more
  • Partial Differential Equations

Xunzi Xie

UBC
Uniqueness of axisymmetric viscous flows originating from circular vortex filaments

May 6, 2025 - 4:00 pm to 5:00 pm

MATH 105

In this talk, we outline the existence and uniqueness of axisymmetric solution to the Navier Stokes equation with vortex filament initial data established by Gallay and Sverak. This work is connected to a recent important result by the same authors establishing long time ... Read more
  • Partial Differential Equations

Vanessa Radzimski

University of the Fraser Valley
The Mathematical Education of Canadian School Teachers: 1925 - 2025

May 6, 2025 - 4:00 pm to 5:00 pm

MATH 104

In this talk, we will discuss the historical evolution of teacher certification and the qualifications to teach mathematics in Canada, focusing on the current educational pathways of future teachers. In particular, we will explore the role that mathematics departments play in ... Read more
  • Mathematics education

Weiyong He

University of Oregon
Isotopy problems on symplectic four manifolds and geometric flows

May 6, 2025 - 4:00 pm to 5:00 pm

MATH 202

We will discuss the well-known isotopy problem in symplectic geometry in dimension four. Given a compact symplectic four manifold with a fixed symplectic class, a long standing problem is to ask whether all symplectic forms in the cohomology class are path connected (isotopic ... Read more
  • Differential geometry